Zodiac Reactor

Collect Elemental Orbs to fuel the Star maker, a cosmic reactor that converts the 4 basic elements (fire, earth, air and water) into stars!
These elements can only be captured while they are in the target zone in the centre. As soon as one enters the zone, press the correct arrow key to capture it. If you do this too early, you will lose points. If you do this too late, the reactor will be damaged.

Every element is to be captured with its own arrow key:
arrow up for fire;
arrow right for earth;
arrow down for air;
arrow left for water;